central lake in uzon volcano caldera on the kamchatka peninsula. russia

100 ago area bank basin been below big caldera central concentration depression difficult east eruptions everdeepening feasible field formed found geyser geysers ground have heritage hot huge june kamchatka kilometers kronotsky lake largest left located many mud nature ninety only part peninsula predominantly reach reserve result river russia russian second site springs square stratovolcano strong temperatures this thousand transport turn uzon valley volcano was world years